4. A farmer wishes to develop a strain of high-yield corn that is also resistant to drought. He has the following individuals from the current year's crop: Individual A: Yield: 179 bushels/acre; drought resistance: high Individual B: Yield: 220 bushels/acre; drought resistance: low Individual C: Yield: 185 bushels/acre; drought resistance: medium Individual D: Yield: 140 bushels/acre; drought resistance: high Individual E: Yield: 200 bushels/acre; drought resistance: medium Which cross would produce the highest corn yield with the highest resistance to drought? a. B and B b. A and B c. C and E d. B and D